This is absolutely stunning. I can't pin down what is it about this game, besides the theme, that gives me such peace, or at least (even when it frustrates me) such a strong sensation that I am contemplating the actions of another possible version of me that has overcome material desire and is one with all. Congratulations.
My three favorite levels were Flower, Liftoff and Letter T, of which unfortunately I only solved the latter before successfully searching for "Fold Origami Game" on YouTube. Thus Flower and Liftoff are the only two levels that defeated me in my attempts to 100% them all by myself.
In most levels, correct moves tend to be folding the paper to align some edge with some part of the dotted shape. What I find so compelling in the ones I mentioned, particularly in Letter T, is how the layout forces you to form the shape OUTSIDE the dotted lines, trying to visualize it without really seeing it, and only really perceiving the shape after the last turn. And that last turn is bliss. In one single movement I took the shapeless mass of that which couldn't be anything, and turned it into a recognisable form, forced the indefinite cloud to respect the shape that answers to the name I gave it. "Sheet of paper, I name you 'flower.' Let your shape be the one and only shape that does justice to the name I gave you."
A few recommendations. Better scrolling in the level select screen. Smoother I mean, less compartmented: if I only have Trapezoid and Diamond left unfinished, for instance, I'd like to be able to see them both at the same time in the level select screen, since they're consecutive levels it'd feel right. Looping: if I'm selecting the first level and press the up arrow, that should take me to the last level on the list, otherwise every time I enter the level select screen I need to scroll all the way down, which isn't awful really, but feels unnecessary. Pushable key or clickable button to UNDO last fold and maybe another to UNDO the last UNDO: the numbers at the bottom of the screen are a truly great feature but sometimes I felt like I just needed to go back one or two turns without having to think which turn I'm currently in.
A sword may protect you from danger, but it is heavy. A horse may help you escape, but it gets hungry. A fire may cook your food, but it will burn your skin.
The sheet of paper is light, knows no hunger and burns you not, and to the true origami master it can also be a sword, a horse, a fire and all things that exist around us.